factor/vm/to_tenured_collector.cpp

#include "master.hpp"

namespace factor {

to_tenured_collector::to_tenured_collector(factor_vm* parent)
    : collector<tenured_space, to_tenured_policy>(parent,
                                                  parent->data->tenured,
                                                  to_tenured_policy(parent)) {}

void to_tenured_collector::tenure_reachable_objects() {
  std::vector<cell>* mark_stack = &parent->mark_stack;
  while (!mark_stack->empty()) {
    cell ptr = mark_stack->back();
    mark_stack->pop_back();
    this->trace_object((object*)ptr);
  }
}

void factor_vm::collect_to_tenured() {
  /* Copy live objects from aging space to tenured space. */
  to_tenured_collector collector(this);

  mark_stack.clear();

  collector.trace_roots();
  collector.trace_contexts();

  gc_event* event = current_gc->event;

  if (event)
    event->started_card_scan();
  collector.trace_cards(data->tenured, card_points_to_aging, full_unmarker());
  if (event)
    event->ended_card_scan(collector.cards_scanned, collector.decks_scanned);

  if (event)
    event->started_code_scan();
  collector.trace_code_heap_roots(&code->points_to_aging);
  if (event)
    event->ended_code_scan(collector.code_blocks_scanned);

  collector.tenure_reachable_objects();

  data->reset_generation(&nursery);
  data->reset_generation(data->aging);
  code->clear_remembered_set();
}

}